<template>
    <div id="loading">
        <div class="box">
            <div class="v-html" v-html="loading[index]" v-show="isHtml"></div>
            <div class="v-text" v-text="loading[index]" v-show="!isHtml"></div>
            <div></div>
        </div>
        <div class="btn">
            <div class="change-btn" @click="isHtml = !isHtml">{{ isHtml ? "查看源码" : "查看示例" }}</div>
            <div class="loading-btn">
                <div class="loading-btn-item" @click="index = 0">1</div>
                <div class="loading-btn-item" @click="index = 1">2</div>
                <div class="loading-btn-item" @click="index = 2">3</div>
            </div>
        </div>
    </div>
</template>

<script>
import '../assets/css/loading.css'
//采用选项式API
export default{
    name: 'Loading',
    props:{

    },
    data() {
        return {
          loading: [`<div class="sk-chase">
                   <div class="sk-chase-dot"></div>
                   <div class="sk-chase-dot"></div>
                   <div class="sk-chase-dot"></div>
                   <div class="sk-chase-dot"></div>
                   <div class="sk-chase-dot"></div>
                   <div class="sk-chase-dot"></div>
                 </div>`,
            `<div class="spinner">
                   <div class="rect1"></div>
                   <div class="rect2"></div>
                   <div class="rect3"></div>
                   <div class="rect4"></div>
                   <div class="rect5"></div>
                 </div>`,
            `<div class="sk-cube-grid">
                   <div class="sk-cube sk-cube1"></div>
                   <div class="sk-cube sk-cube2"></div>
                   <div class="sk-cube sk-cube3"></div>
                   <div class="sk-cube sk-cube4"></div>
                   <div class="sk-cube sk-cube5"></div>
                   <div class="sk-cube sk-cube6"></div>
                   <div class="sk-cube sk-cube7"></div>
                   <div class="sk-cube sk-cube8"></div>
                   <div class="sk-cube sk-cube9"></div>
                 </div>`],
          isHtml: true,
          index: 0
        }
      },
    methods:{
        changeShow(){
            this.isHtml=!this.isHtml
        }
    }
}
</script>
<style>
body {
    margin: 0;
    padding: 0;
}

#loading {
    width: 100%;
    height: 800px;
    background: linear-gradient(to right, #7474bf, #348ac7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #FFF;
}

.box {
    width: 400px;
    height: 350px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.box .v-text {
    width: 100%;
    height: 100%;
}

.btn {
    width: 200px;
    height: 150px;
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.btn .loading-btn {
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.btn .loading-btn .loading-btn-item {
    width: 35px;
    height: 35px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    text-align: center;
    line-height: 35px;
    cursor: pointer;
}

.btn .change-btn {
    width: 100px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.2);
    cursor: pointer;
    border-radius: 20px;
    font-size: 13px;
    letter-spacing: 2px;
}
</style>